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Verified answer
Perpindahan = 0 m (posisi awal = posisi akhir)jarak
= 12 × keliling lapangan
= 12 × 2(p + l)
= 12 × 2(100 + 400)
= 12 × 1000
= 12000 m
waktu = 1 jam = 3600 s
kecepatan rata2
= perpindahan/waktu = 0/3600 = 0 m/s
kelajuan rata2
= jarak/waktu
= 12000/3600
= 3,33 m/s